Developer Tools
Free online developer tools — JSON editor, Base64, Hash, Regex, URL Encoder, and Color Converter.
Your files never leave your device
⭐ Popüler
JSON Editor
Format, validate, minify, and explore JSON data in tree view
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Base64 Converter
Encode and decode text and files to Base64 format
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Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hash values
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Regex Tester
Test your regular expressions in real-time
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URL Encoder/Decoder
Encode or decode URLs
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Color Converter
Convert between HEX, RGB, and HSL color formats
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⭐ Popüler
Mermaid Diagram Editor
Write Mermaid code, create live flowcharts, sequence diagrams, ER diagrams and more
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QR Code Generator
Generate QR codes from text or URLs instantly — free, no sign-up required
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Developer Tools — How to Use
Free online developer tools — JSON editor, Base64, Hash, Regex, URL Encoder, and Color Converter.
Your files are never uploaded to a server. All processing happens in your browser.